PROBLEM BOOKS IN MATHEMATICS Arthur Engel Problem-Solving Strategies Springer Problem Books in Mathematics Edited by K.Bencsath P.R.Halmos Springer New York Berlin Heidelberg Barcelona Hong Kong London Milan Paris Singapore Tokyo Problem Books in Mathematics Series Editors:K.Bencsath and P.R.Halmos Polynomials by Edward J.Barbeau Problems in Geometry by Marcel Berger Pierre Pansu Jean-Pic Berry and Xavier Saint-Raymond Problem Book for First Year Calculus by George W.Bluman Exercises in Probability by T.Cacoullos An Introduction to Hilbert Space and Quantum Logic by David W.Cohen Unsolved Problems in Geometry by Hallard T.Croft Kenneth J.Falconer and Richard K.Guy Problem-Solving Strategies by Arthur Engel Problems in Analysis by Bernard R.Gelbaum Problems in Real and Complex Analysis by Bernard R.Gelbaum Theorems and Counterexamples in Mathematics by Bernard R.Gelbaum and John M.H.Olmsted Exercises in Integration by Claude George Algebraic Logic by S.G.Gindikin Unsolved Problems in Number Theory (2nd ed.) by Richard K.Guy (continued after index) ...